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A laboratory-based separation sequence has been developed to produce an aqueous glycolaldehyde solution as fermentation feedstock. It consists of water extraction of pyrolysis oil, acid removal, water removal, octanol extraction, phenolic removal, back-extraction, and washing. The octanol-free aqueous glycolaldehyde solution contains approximately 4 wt% glycolaldehyde, which meets the requirement of fermentation feedstock.
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Vitasari et al. (2011) studied this question.
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